From: "Jim O'Donnell" <[log in to unmask]> Date: Mon, 19 Jun 2017 17:03:33 -0700 OK, this is Cisco selling their equipment and services and pushing a vision of the future, but it's still very instructive: https://newsroom.cisco.com/press-release-content?type=webcontent&articleId=1853168 Predictions include total global internet users going from 3.8 to 4.6 billion, while more than half of the by-then 27 billion devices connected to the internet will be "internet of things" rather than human-directed technology like phones and laptops. "With the rise of connected applications such as health monitors, medicine dispensers, and first-responder connectivity, the health vertical will be fastest-growing industry segment (30 percent CAGR)." Cars will come in a close second. Video will be the largest single consuming type of traffic (account for 80% of the whole). Lest those numbers make you too dizzy, know that Distributed Denial of Service attacks will get much larger and more powerful at the same time. So even if I wouldn't swear to those numbers, they point in an important direction where human beings are poor information processors. Really big numbers getting bigger faster are as hard for us to handle as really small numbers are. A thirty percent growth rate doubles in three years. It's easy for ordinary mortals to shamble around assuming that the world is about as big and complex as it's always been, or just a little bigger. No, growth factors like this change scale in important ways. I say this while forgetting that there are about twice as many Americans around as there were when I got here and three times as many people on the planet. Heck, there are about twice as many people in my *city* as there were when I first started visiting it regularly 25 years ago. Jim O'Donnell ASU